Philip B. Shepherd

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Sedalia, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Lightweight building material board
- Patent number 5,256,222
- Issue date Oct 26, 1993
- Manville Corporation
- Philip B. Shepherd
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Fibrous mat especially suitable for roofing products and a method o...
- Patent number 4,129,674
- Issue date Dec 12, 1978
- Johns-Manville Corporation
- George J. Hannes
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Fibrous mat especially suitable for roofing products
- Patent number 4,112,174
- Issue date Sep 5, 1978
- Johns-Manville Corporation
- George John Hannes
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Roofing shingle utilizing an asphalt composition and method of maki...
- Patent number 3,931,440
- Issue date Jan 6, 1976
- Johns-Manville Corporation
- Philip Bickford Shepherd
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...